2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
9 The Alpha is a 64-bit general-purpose processor designed and
10 marketed by the Digital Equipment Corporation of blessed memory,
11 now Hewlett-Packard. The Alpha Linux project has a home page at
12 <http://www.alphalinux.org/>.
24 config RWSEM_GENERIC_SPINLOCK
27 config RWSEM_XCHGADD_ALGORITHM
31 config GENERIC_ISA_DMA
45 prompt "Alpha system type"
48 This is the system type of your hardware. A "generic" kernel will
49 run on any supported Alpha system. However, if you configure a
50 kernel for your specific system, it will be faster and smaller.
52 To find out what type of Alpha system you have, you may want to
53 check out the Linux/Alpha FAQ, accessible on the WWW from
54 <http://www.alphalinux.org/>. In summary:
56 Alcor/Alpha-XLT AS 600
57 Alpha-XL XL-233, XL-266
58 AlphaBook1 Alpha laptop
59 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
60 Cabriolet AlphaPC64, AlphaPCI64
62 EB164 EB164 21164 evaluation board
63 EB64+ EB64+ 21064 evaluation board
64 EB66 EB66 21066 evaluation board
65 EB66+ EB66+ 21066 evaluation board
66 Jensen DECpc 150, DEC 2000 model 300,
70 Miata Personal Workstation 433a, 433au, 500a,
72 Marvel AlphaServer ES47 / ES80 / GS1280
74 Noname AXPpci33, UDB (Multia)
75 Noritake AS 1000A, AS 600A, AS 800
77 Rawhide AS 1200, AS 4000, AS 4100
78 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
80 Sable AS 2000, AS 2100
83 Titan AlphaServer ES45 / DS25
84 Wildfire AlphaServer GS 40/80/160/320
86 If you don't know what to do, choose "generic".
91 A generic kernel will run on all supported Alpha hardware.
94 bool "Alcor/Alpha-XLT"
96 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
97 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
98 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
99 controller (256-bit memory bus) and a PCI interface. It also does
100 all the work required to support an external Bcache and to maintain
101 memory coherence when a PCI device DMAs into (or out of) memory.
106 XL-233 and XL-266-based Alpha systems.
111 Dec AlphaBook1/Burns Alpha-based laptops.
113 config ALPHA_AVANTI_CH
116 config ALPHA_CABRIOLET
119 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
120 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
121 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
122 Bcache SIMMs. Requires power supply with 3.3V output.
127 Various 21264 systems with the tsunami core logic chipset.
128 API Networks: 264DP, UP2000(+), CS20;
129 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
134 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
135 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
136 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
137 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
138 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
139 motherboard. Requires power supply with 3.3V output.
141 config ALPHA_EB64P_CH
147 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
148 identical to EB64+. Baby PC-AT size. Runs from standard PC power
149 supply. The EB66 schematic was published as a marketing poster
150 advertising the 21066 as "the first microprocessor in the world with
156 Later variant of the EB66 board.
161 Apparently an obscure OEM single-board computer based on the
162 Typhoon/Tsunami chipset family. Information on it is scanty.
167 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
168 of the first-generation Alpha systems. A number of these systems
169 seem to be available on the second- hand market. The Jensen is a
170 floor-standing tower system which originally used a 150MHz 21064 It
171 used programmable logic to interface a 486 EISA I/O bridge to the
177 A technical overview of this board is available at
178 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
183 AlphaServer 2100A-based systems.
188 AlphaServer ES47 / ES80 / GS1280 based on EV7.
193 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
194 or 600au). There is an Installation HOWTO for this hardware at
195 <http://eijk.homelinux.org/~stefan/miata.html>.
200 AlphaServer 1000-based Alpha systems.
202 config ALPHA_NAUTILUS
205 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
207 config ALPHA_NONAME_CH
210 config ALPHA_NORITAKE
213 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
225 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
227 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
232 Samsung APC164UX. There is a page on known problems and workarounds
233 at <http://www.alphalinux.org/faq/FAQ-11.html>.
244 Digital AlphaServer 2000 and 2100-based systems.
252 Alpha 11164-based OEM single-board computer.
257 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
259 config ALPHA_WILDFIRE
262 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
266 # clear all implied options (don't want default values for those):
267 # Most of these machines have ISA slots; not exactly sure which don't,
268 # and this doesn't activate hordes of code, so do it always.
273 Find out whether you have ISA slots on your motherboard. ISA is the
274 name of a bus system, i.e. the way the CPU talks to the other stuff
275 inside your box. Other bus systems are PCI, EISA, MicroChannel
276 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
277 newer boards don't support it. If you have ISA, say Y, otherwise N.
281 depends on !ALPHA_JENSEN
284 Find out whether you have a PCI motherboard. PCI is the name of a
285 bus system, i.e. the way the CPU talks to the other stuff inside
286 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
287 VESA. If you have PCI, say Y, otherwise N.
289 The PCI-HOWTO, available from
290 <http://www.tldp.org/docs.html#howto>, contains valuable
291 information about which PCI hardware does work under Linux and which
298 config ALPHA_CORE_AGP
300 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
305 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
308 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
309 UDB). This design was produced by Digital's Technical OEM (TOEM)
310 group. It uses the 21066 processor running at 166MHz or 233MHz. It
311 is a baby-AT size, and runs from a standard PC power supply. It has
312 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
313 2 versions, with either PS/2 or large DIN connectors for the
318 depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
319 default y if !ALPHA_LYNX
323 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
328 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
333 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
336 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
337 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
338 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
339 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
340 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
341 Runs from standard PC power supply.
344 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
345 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
349 default y if ALPHA_LYNX && !ALPHA_EV5
353 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
357 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
358 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
361 prompt "EV56 CPU (speed >= 333MHz)?"
362 depends on ALPHA_NORITAKE && ALPHA_PRIMO
365 prompt "EV56 CPU (speed >= 400MHz)?"
366 depends on ALPHA_RAWHIDE
369 bool "EV5 CPU daughtercard (model 5/xxx)?"
370 depends on ALPHA_NORITAKE || ALPHA_MIKASA
372 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
375 bool "EV5 CPU(s) (model 5/xxx)?"
376 depends on ALPHA_SABLE
378 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
382 depends on ALPHA_LYNX
387 depends on ALPHA_SABLE || ALPHA_LYNX
392 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
397 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
402 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
406 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
407 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
409 Is this a machine based on the EV67 core? If in doubt, select N here
410 and the machine will be treated as an EV6.
414 depends on ALPHA_MARVEL
419 depends on ALPHA_RAWHIDE
424 depends on ALPHA_RX164
427 config ALPHA_IRONGATE
429 depends on ALPHA_NAUTILUS
434 depends on ALPHA_XL || ALPHA_AVANTI_CH
437 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
439 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
441 config ALPHA_BROKEN_IRQ_MASK
443 depends on ALPHA_GENERIC || ALPHA_PC164
447 bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
448 default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
450 There are two different types of booting firmware on Alphas: SRM,
451 which is command line driven, and ARC, which uses menus and arrow
452 keys. Details about the Linux/Alpha booting process are contained in
453 the Linux/Alpha FAQ, accessible on the WWW from
454 <http://www.alphalinux.org/>.
456 The usual way to load Linux on an Alpha machine is to use MILO
457 (a bootloader that lets you pass command line parameters to the
458 kernel just like lilo does for the x86 architecture) which can be
459 loaded either from ARC or can be installed directly as a permanent
460 firmware replacement from floppy (which requires changing a certain
461 jumper on the motherboard). If you want to do either of these, say N
462 here. If MILO doesn't work on your system (true for Jensen
463 motherboards), you can bypass it altogether and boot Linux directly
464 from an SRM console; say Y here in order to do that. Note that you
465 won't be able to boot from an IDE disk using SRM.
471 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
475 bool "Symmetric multi-processing support"
476 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
478 This enables support for systems with more than one CPU. If you have
479 a system with only one CPU, like most personal computers, say N. If
480 you have a system with more than one CPU, say Y.
482 If you say N here, the kernel will run on single and multiprocessor
483 machines, but will use only one CPU of a multiprocessor machine. If
484 you say Y here, the kernel will run on many, but not all,
485 singleprocessor machines. On a singleprocessor machine, the kernel
486 will run faster if you say N here.
488 See also the <file:Documentation/smp.tex>, and the SMP-HOWTO
489 available at <http://www.tldp.org/docs.html#howto>.
491 If you don't know what to do here, say N.
499 int "Maximum number of CPUs (2-64)"
505 bool "Discontiguous Memory Support (EXPERIMENTAL)"
506 depends on EXPERIMENTAL
508 Say Y to upport efficient handling of discontiguous physical memory,
509 for architectures which are either NUMA (Non-Uniform Memory Access)
510 or have huge holes in the physical address space for other reasons.
511 See <file:Documentation/vm/numa> for more.
514 bool "NUMA Support (EXPERIMENTAL)"
515 depends on DISCONTIGMEM
517 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
518 Access). This option is for configuring high-end multiprocessor
519 server machines. If in doubt, say N.
521 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
522 config ALPHA_LARGE_VMALLOC
525 Process creation and other aspects of virtual memory management can
526 be streamlined if we restrict the kernel to one PGD for all vmalloc
527 allocations. This equates to about 8GB.
529 Under normal circumstances, this is so far and above what is needed
530 as to be laughable. However, there are certain applications (such
531 as benchmark-grade in-kernel web serving) that can make use of as
532 much vmalloc space as is available.
534 Say N unless you know you need gobs and gobs of vmalloc space.
536 config VERBOSE_MCHECK
537 bool "Verbose Machine Checks"
539 config VERBOSE_MCHECK_ON
540 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
541 depends on VERBOSE_MCHECK
544 This option allows the default printing mode to be set, and then
545 possibly overridden by a boot command argument.
547 For example, if one wanted the option of printing verbose
548 machine checks, but wanted the default to be as if verbose
549 machine check printing was turned off, then one would choose
550 the printing mode to be 0. Then, upon reboot, one could add
551 the boot command line "verbose_mcheck=1" to get the normal
552 verbose machine check printing, or "verbose_mcheck=2" to get
553 the maximum information available.
555 Take the default (1) unless you want more control or more info.
557 source "drivers/pci/Kconfig"
558 source "drivers/eisa/Kconfig"
560 source "drivers/pcmcia/Kconfig"
563 tristate "SRM environment through procfs"
566 If you enable this option, a subdirectory inside /proc called
567 /proc/srm_environment will give you access to the all important
568 SRM environment variables (those which have a name) and also
569 to all others (by their internal number).
571 SRM is something like a BIOS for Alpha machines. There are some
572 other such BIOSes, like AlphaBIOS, which this driver cannot
573 support (hey, that's not SRM!).
575 Despite the fact that this driver doesn't work on all Alphas (but
576 only on those which have SRM as their firmware), it's save to
577 build it even if your particular machine doesn't know about SRM
578 (or if you intend to compile a generic kernel). It will simply
579 not create those subdirectory in /proc (and give you some warning,
582 This driver is also available as a module and will be called
585 source "fs/Kconfig.binfmt"
589 source "drivers/Kconfig"
593 source "arch/alpha/oprofile/Kconfig"
595 source "arch/alpha/Kconfig.debug"
597 source "kernel/vserver/Kconfig"
599 source "security/Kconfig"
601 source "crypto/Kconfig"